US4674273AExpiredUtility
Method to texturize synthetic yarns
Est. expiryApr 10, 2006(expired)· nominal 20-yr term from priority
D02G 1/20
60
PatentIndex Score
12
Cited by
3
References
5
Claims
Abstract
Method to produce a spun-like textured yarn comprised of one yarn which is substantially fully oriented and the other yarn is partially oriented. The method involves plying the yarns in the draw zone before being pre-textured. The ply point of the plied yarns is located above the entrance to the heater in the draw zone.
Claims
exact text as granted — not AI-modifiedWe claim:
1. A method to produce a spun-like continuous filament comprising the steps of: supply a first continuous filament partially oriented yarn at a first speed, supply a second continuous filament partially oriented yarn at a second speed which is higher than the first speed, plying the first and second synthetic yarns, heating the plied yarns, drawing the plied yarn at a speed to substantially fully orient one of the yarns and to partially orient the other of the synthetic yarns, false twisting the plied yarns and commingling the plied yarns to form a composite yarn with loops therein.
2. The method of claim 1 wherein the plied yarns are passed through a heater and the initial ply point of the plied yarns is located upstream of the heater.
3. The method of claim 2 wherein the fully oriented yarn is placed under greater tension than the partially oriented yarn.
4. The method of claim 1 the partially oriented yarn is wrapped around the fully oriented yarn.
5. The method of claim 4 wherein the plied yarns are passed through a heater and the initial ply point of the plied yarns is located upstream of the heater.Cited by (0)
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